70804289 has 4 divisors (see below), whose sum is σ = 70827456. Its totient is φ = 70781124.

The previous prime is 70804267. The next prime is 70804301. The reversal of 70804289 is 98240807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70804289 - 2⁸ = 70804033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70804259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6149 + ... + 13394.

It is an arithmetic number, because the mean of its divisors is an integer number (17706864).

Almost surely, 2^70804289 is an apocalyptic number.

It is an amenable number.

70804289 is a deficient number, since it is larger than the sum of its proper divisors (23167).

70804289 is a wasteful number, since it uses less digits than its factorization.

70804289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23166.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 70804289 is about 8414.5284478692. The cubic root of 70804289 is about 413.7009536517.

The spelling of 70804289 in words is "seventy million, eight hundred four thousand, two hundred eighty-nine".